{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn00675_003.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Marysville, California | 1895 | key map | mapsnap generated fit (2026-09-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-22"},{"label":"run","value":"corpus-v1"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364mm:g4364mm_g006751895:00675_1895-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Marysville, California | 1895 | sanborn00675_003 p1 [1]","metadata":[{"label":"streets","value":"18"},{"label":"intersections","value":"50"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6878.4"},{"label":"split_canvas_h","value":"8074.1"}],"created":"2026-09-22T15:45:29Z","modified":"2026-09-22T15:45:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364mm:g4364mm_g006751895:00675_1895-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364mm:g4364mm_g006751895:00675_1895-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613,430.6 1440.2,405.8 1438.1,0.0 1001.5,0.0 955.3,0.0 575.7,0.0 364.6,0.0 0.0,0.0 -0.0,1913 1613,1913 1613,430.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364mm:g4364mm_g006751895:00675_1895-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1043.5,1489.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.5899062,39.1413699]}},{"type":"Feature","properties":{"resourceCoords":[1239.2,1110.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.587109,39.148411]}}]}}]}